<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .ripple {
            position: relative;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: #3498db;
            animation: ripple 2s infinite;
            overflow: hidden;
        }

        .ripple::before,
        .ripple::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            opacity: 0;
            animation: ripple-effect 2s infinite;
        }

        .ripple::before {
            animation-delay: -1s;
        }

        @keyframes ripple {
            0% {
                transform: scale(1);
            }

            70% {
                transform: scale(1.5);
                opacity: 1;
            }

            100% {
                transform: scale(2);
                opacity: 0;
            }
        }

        @keyframes ripple-effect {
            0% {
                transform: translate(-50%, -50%) scale(0.1);
                opacity: 1;
            }

            70% {
                transform: translate(-50%, -50%) scale(1.5);
                opacity: 0.7;
            }

            100% {
                transform: translate(-50%, -50%) scale(2.2);
                opacity: 0;
            }
        }
    </style>
</head>

<body>
    <div class="ripple"></div>

</body>

</html>